2012 Baja SAE Rules

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B. Valve Lapping Valves may be lapped to ensure proper sealing. Intake angle must remain at 45 degrees; exhaust angle must remain at 45 degrees. B2.5.5 Shafts and Rods Camshaft, crankshaft, connecting rod and flywheel must not be altered or modified. B2.5.6 Spark Plugs Must use RC12YC Only. B2.5.7 Armature Any armature air gap setting is allowed. No slotting or elongating of armature mounting holes to increase or retard ignition timing. B2.5.8 Flywheel Rotation No flywheel rotation to advance or retard timing is permissible. B2.5.9 Carburetor A. Carburetor Re-jetting – Prohibited This is a fixed carburetor, re-jetting of the carburetor is prohibited. B. Idle Speed Any idle speed adjustment is allowed, Briggs & Stratton recommends 1750, ± 100 RPM. C. Carburetor Float Carburetor float is non-adjustable and may not be re-adjusted. D. Carburetor Venturi Modification of carburetor venture is prohibited. B2.5.10 Air Cleaner The air intake may be relocated, but Briggs & Stratton parts must be used to relocate the air filter: 792349 remote kits, 695329 – choke shaft and 699960 bases. The supplied air hose may be shortened to a minimum of 152 mm (6.0 in). No other type of hose will be allowed. A team may also add additional pre-filters to the top of the air intake. These parts must be included on the cost report. Any changes made to the air filter will have to pass Briggs & Stratton inspection. Note from Briggs & Stratton: Relocation of the air cleaner may decrease engine performance. B2.5.11 Exhaust System . A. Muffler Relocation If the vehicle design requires an exhaust system reconfiguration to keep it from impinging on part of the vehicle, the re-routing must be done using tubing having an ID of 32mm (1.25 in). Any remote mounted exhaust system must use the original muffler and must be securely mounted so that it does not vibrate loose during the competition. B. Muffler Support Support of the exhaust pipe and muffler are strongly recommended. C. Exhaust Pipe Exhaust pipe may not protrude inside of the exhaust port, so as to alter port configuration. D. Exhaust Pipe – Length Any exhaust pipe length is allowed, however pipe length may not be adjustable. 13 © 2012 SAE International. All Rights Reserved. Printed in USA. 2012 Baja SAE Rules
E. Exhaust Pipe – Holes & Tubes No extra holes or tubes are allowed in the exhaust pipe. F. Exhaust System – Durability Required The exhaust pipe and muffler must be completely intact and operational throughout the competition. Any vehicle found to have a loose or leaking exhaust system will be removed from competition until the issue can be corrected. B2.5.12 Starter The Recoil starter rope may be extended to accommodate the driver starting the engine while seated B2.5.13 Alternator The engine may be fitted with an alternator to generate electrical energy. The only alternators which may be used are those which Briggs & Stratton specifies for the engine model B2.5.14 Engine Governor Each engine is equipped with a governor. Each governor will be set at competition to a 3,800 rpm or lower maximum speed. Random inspection of the governor may be conducted at any time. Any attempt to defeat the engine governor so as to increase the engine speed is grounds for is grounds for immediate disqualification. Random inspection of the governor may be conducted at any time. GOVERNOR SETTING NOT TO EXCEED 3800 RPM. The governor operation must remain free of obstructions at all times. Governor area must be shielded from debris. The stock configuration of fuel tank mounted to the engine is acceptable for debris management. However, if the fuel tank is to be remote mounted, a debris shield covering the exposed governor area is required. Briggs & Stratton part number 697326 Control Cover may be used or some other part with equivalent features. NOTE: The governor spring must be placed in hole #6. B2.5.15 Hybrid Electric Power Systems Hybrid electric power systems are specifically prohibited. B2.5.16 Energy Storage Devices Used for Propulsion Hydraulic accumulators are the only type of stored energy device that may be incorporated into the vehicle for propulsion purposes. If employed, hydraulic accumulators must be at zero energy at the start of each event. Hydraulic power systems must be properly shielded and documentation of the shielding made available for review. B2.6 Engine Use Restriction Briggs & Stratton generously provides engines to the teams for the exclusive purpose of use on their Baja SAE vehicle. If, for any reason, a team receives an engine and at a later date decides not to participate, it must, at its own expense, return the engine to SAE or Briggs & Stratton. ARTICLE 3: ELECTRICAL SYSTEM B3.1 General Electrical System Overview The electrical system must include at least two kill switches, a brake light, and a battery power source. The kill switches must deactivate the engine ignition. The kill switches must NOT deactivate the brake light. The brake light must operate regardless of the kill switch setting. The brake light, and any reverse light and alarm, must be powered whenever the vehicle is in motion. B3.2 Batteries B3.2.1 Batteries must be mounted with sound engineering practice and not come loose during a roll over. 14 © 2012 SAE International. All Rights Reserved. Printed in USA. 2012 Baja SAE Rules
Page 1 and 2: 2012 Collegiate Design Series Baja
Page 3 and 4: PART E: DESIGN AND COST SUBMISSON P
Page 5 and 6: PART A: ADMINISTRATIVE REGULATIONS
Page 7 and 8: The violations of the intent of a r
Page 9 and 10: Each team is expected to have a Fac
Page 11 and 12: When the electronic submission syst
Page 13: B2.3.1 Engine Shipment outside the
Page 17 and 18: Sample Mountings (Note: The kill sw
Page 19 and 20: . B5.2.2 Number Location Primary cu
Page 21 and 22: B8.2.1 Vertical Space The driver’
Page 23 and 24: B8.3.4 Lower Frame Side Members (LF
Page 25 and 26: RC 5--FBM B8.3.8 Fore/Aft Bracing (
Page 27 and 28: B8.3.12 Roll Cage & Bracing Materia
Page 29 and 30: ARTICLE 9: Cockpit and Throttle B9.
Page 31 and 32: B9.12 Only foot operated throttle c
Page 33 and 34: Figure 9 Figure 10 B10.3.2 Lap Belt
Page 35 and 36: B10.6 Installations - General All i
Page 37 and 38: B12.6.3 Drain Line Material Drains
Page 39 and 40: B14.5 Socket Head Cap Screws B14.5.
Page 41 and 42: Neck Support Permitted Neck Support
Page 43 and 44: (A) Frame Material Documentation: R
Page 45 and 46: C3.3.3 Design Points Design will be
Page 47 and 48: C4.2 Cost Report The Cost Report ma
Page 49 and 50: C5.2.1 Following the presentation t
Page 51 and 52: D2.4.2 Method B: “Fixed Distance-
Page 53 and 54: D If the leading car is not running
Page 55 and 56: Position Lap Bonus Points 1 48 4 2
Page 57 and 58: D9.1.2 Unsportsmanlike conduct can
Page 59 and 60: PART E: DESIGN AND COST SUBMISSON P
Page 61 and 62: BAJA SAE ROLL CAGE SPECIFICATION SH
Page 63: Standards Relevant to Clean Snowmob

2012 Baja SAE Rules

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